It's not so much that he says he's a master in all these arts
but this little part right here taken from his website:

Questions pertaining to Martial Arts:
How many Martial Arts classes can I take per week?
You can take up to 2 classes a week on a regular program. Black Belt Club members can come to as many times a week as they wish in accordance to their belt level schedule.

When do I renew my yearly Martial Arts membership?
ChŪ's Martial Arts training membership is renewed by all students in January of each year.

When do I pay for testing for my next rank belt?
Your instructor will give you an application to test. You must fill it out front and back and turn it in to the front desk. The application must be turned in 2 days before testing to avoid a late fee.

How do I join the Black Belt Club?
Before your initial enrollment expires, you can make an appointment to speak to the program director. At that time he or she will go over your options for continuing your program. At this point you are eligible for the Black Belt Club. The Black Belt Club is a program for members offering discounts on merchandise and events, and special programs for Black Belt Club members only.

How do I join the Master Club?
You can join the Master Club at any point after the Brown Belt level. This program offers more benefits than the Black Belt Club.

Do you have family rates?
Yes we do. If you wish to enroll additional family members we offer substantial savings. Please check each location for the family discount available.

Can I put my Martial Arts program on hold if I am sick, on vacation or on a business trip?
Your martial arts program can be put on hold if you are going to be out for more than 7 days. You can call, fax or bring in a request to hold the program. Holding the program will not stop the payments. Holding the program will extend your expiration date.

How do I Cancel my martial arts program?
You would be able to cancel your program if you are moving away from a school (25 miles) or if you have a medical note. Refer to the back of your agreement. If you satisfy any of the conditions put a request in writing to the school by fax, mail, or in person.http://www.nymatc.com/Programs.htm

Originally posted by ojgsxr6 I'm sure a lot of good schools have a Black Belt Club, they have to make money too. When you have to move out of your county, or die to quit the school, then we have some issues.